Last week's release of Rock Band 3 pushed the platform's total number of songs well above 2,000. And with the company pushing to get 5,000 songs into the setlist over the coming years, trying to keep that many tracks straight can be quite a challenge. Thankfully, much like everything else in the world, there's an app for that with third-party developers Three Brothers creating a sortable list of Rock Band music.

This free app allows users to organize songs based on artist, song, version or even difficulty. So if you remember there's that one bluegrass song that's ridiculously hard in Rock Band but can't think of its name then this little wonder will handily tell you that it's "Green Grass and High Tides" which completely wrecked your fingers. Of course there's a big fear that the app will quickly grow outdated due to the ever-expanding musical lineup, but the developers are promising monthly updates to keep the library totally up to date.

Perhaps the most devious inclusion of all is the ability to preview or purchase songs with a single click, allowing you to play a song in Rock Band and then immediately head over to your iPhone or iPod and add the track to your musical library. Just remember that just because you feel nostalgic and hip playing Smashmouth's "Walkin' on the Sun" right now doesn't mean you'll still want to hear it in a month. Just ask the late '90s about that.

The app iss available right now and, as mentioned before, it's totally free. If you're a Rock Band fan who's tired of scrolling through the menus trying to find a particular song then try out this handy little solution. And we already apologize for how your bank account will soon be emptied from buying all this music.